diff --git a/Migrating-to-reveal.js-3.0.0.md b/Migrating-to-reveal.js-3.0.0.md
index 835d484..030f2e9 100644
--- a/Migrating-to-reveal.js-3.0.0.md
+++ b/Migrating-to-reveal.js-3.0.0.md
@@ -13,7 +13,7 @@ with
 ```
 
 ### New default transition
-A sliding transition replaces the previous 3D rotation effect. If you want to stick to the old transition you'll need to specify `transition: concave` when initializing reveal.js.
+A sliding transition replaces the previous 3D rotation effect. If you want to stick to the old transition you'll need to specify `transition: 'concave'` when initializing reveal.js.
 
 ### Upsizing by default
 Presentations now automatically scale up to fill more of the browser viewport. The aspect ratio of your content will be maintained so there should be no change in layout. If you wish to turn this off include `maxScale: 1` when initializing reveal.js.